Byzantine Anno Mundi Converter
Convert an AD year and month into the Byzantine Anno Mundi year that begins on 1 September (AM = AD + 5509 from September, else AD + 5508) with its 15-year indiction counted from the first indiction of AM 6821 (September 312).
Description
Convert an AD year and month into the Byzantine Anno Mundi year that begins on 1 September (AM = AD + 5509 from September, else AD + 5508) with its 15-year indiction counted from the first indiction of AM 6821 (September 312).